Class: HttpLinkHeader

Inherits:
Hash
  • Object
show all
Defined in:
lib/http_link_header.rb,
lib/http_link_header/version.rb

Defined Under Namespace

Classes: HttpLinkParams

Constant Summary collapse

DELIMETER = 
','
VERSION = 
"0.2.0"

Instance Method Summary collapse

Constructor Details

#initialize(link_header = []) ⇒ HttpLinkHeader

Returns a new instance of HttpLinkHeader.



7
8
9
10
 
# File 'lib/http_link_header.rb', line 7

def initialize(link_header = [])
  link_header = link_header.split(DELIMETER) if link_header.is_a?(String)
  link_header.each { |link_value| add(link_value) }
end

Instance Method Details

#[](uri_reference) ⇒ Object 



12
13
14
 
# File 'lib/http_link_header.rb', line 12

def [](uri_reference)
  super(uri_reference.to_s)
end

#[]=(uri_reference, link_params) ⇒ Object 



16
17
18
19
20
21
22
23
 
# File 'lib/http_link_header.rb', line 16

def []=(uri_reference, link_params)
  link_params = nil if link_params && link_params.empty?
  if self[uri_reference]
    self[uri_reference].add(link_params) unless link_params.nil?
  else
    super(uri_reference.to_s, link_params.nil? ? nil : HttpLinkParams.new(link_params))
  end
end

#add(link_value) ⇒ Object 



25
26
27
28
29
30
31
32
 
# File 'lib/http_link_header.rb', line 25

def add(link_value)
  if link_value_match = link_value.strip.match(/\A<([^>]+)>\s*(;\s*(.*))?\z/)
    uri_reference, link_params = link_value_match.values_at(1, 3)
    self[uri_reference.strip] = link_params ? link_params.strip : nil
  else
    raise ArgumentError, "invalid link-value: #{link_value}"
  end
end

#to_a ⇒ Object 



34
35
36
37
38
39
40
 
# File 'lib/http_link_header.rb', line 34

def to_a
  map do |uri_reference, link_params|
    link_value = "<#{uri_reference}>"
    link_value << "#{HttpLinkParams::DELIMETER} #{link_params.to_s}" if link_params && !link_params.empty?
    link_value
  end
end

#to_s ⇒ Object 



42
43
44
 
# File 'lib/http_link_header.rb', line 42

def to_s
  to_a.join("#{DELIMETER} ")
end